Maternal GBS genitourinary or gastrointestinal colonization in the current pregnancy
Delivery at <37 weeks of gestation
Premature rupture of membranes at any gestation
Rupture of membranes for ≥18 hours before delivery
Chorioamnionitis
GBS bacteriuria during the current pregnancy (>104 cfu/mL)
Temperature 38°C, or 100.4°F or higher, during labor
Prior delivery of an infant with GBS disease
Parenteral antibiotic treatment* given to the woman for confirmed or suspected invasive bacterial infection (such as septicaemia) at any time during labour, or in the 24-hour periods before and after the birth [*This does not refer to intrapartum antibiotic prophylaxis]
Suspected or confirmed infection in another baby in the case of a multiple pregnancy